How do I get the 'Fracture' panel to appear in the Toolshelf?
No, this addon is bundled with the Fracture Modifier Build, it should be inside the "fracture_extra" folder within the zip file which contains the build. ("fracture_helper.py") Alternatively you can separately download it here:

http://blenderphysics.com/fracturemodifier/

(Helper Addon)

The addon might also be updated separately from the build from time to time.